This addon disables the Page Visibility API. This prevents, for example, video conferencing systems from detecting whether you are in their tab or in another window. The source code of this add-on can be found here: https://github.com/marvinschopf/disable-page-visibility-api The addon's icon is a derivative of "Expand New Tab" by Syafiqa Fickle from the Noun Project, used under CC BY.